Automatic window-lifter.



. GRISMON.

AUTOMATIC WINDOW LIFTER.

APPLICATION FILED JUNE 3 1914.

Patented Dec. 15, 1914.

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we NOR 'ls Pk 'ERS 13o. PHOTO-1.11m WAbHINLIUN, I! r GILBERT M. CRISMON, OF .NAGROIVI, \VASHINGTON.

AUTOMATIC VIINDOVI-LIFTER.

Application filed June 3, 1914.

To all "whom it may concern Be it known that I, GILBERT M. Cinsnox, a citizen of the United States, residing at Nagrom, in the county of King, State of ll' ashington, have invented certain new and useful Improvements in Automatic lVindow- Lifters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to windows and has special reference to an automatic means for raising a sash, said means acting in its lowest position as a sash lock.

One object of this invention is the provi sion of improved means whereby a sash, no matter how heavy, may be raised to any desired degree with the minimum of exertion.

Another object of the invention is to provide means of improved character for use in this connection which will prevent racking of the sash by imposing a strain on the sash tending to distort it.

With the above and other objects in view the invention consists in general of certain novel details of construction and combination of parts hereinafter fully described, illustrated in the accompanying drawings, and specifically claimed.

In the accompanying drawings, like characters of reference indicate like parts in the several views, and Figure 1 is a front elevation of a window showing the frame and sash from the inside thereof. said sash being broken away the better to show the working parts. Fig. 2 is a section on the line 2-2 of Fig. 1. Fig. 3 is a section on the line 3-3 of Fig. 1.

In carrying out the objects of the invention there is provided a frame 10 of the usual kind having the hollow side members and being in all respects of the usual construction employing sash weights for balancing the sashes. lVithin this frame is slidably mounted a sash 11to which are connected he sash weight cords 12 which run over the sash weight pulleys 13 and carry at their lower end the sash weights 1 's. In the pres ent instance these sash weights are made of sufficient weight to rz ise the sash if the latter is left free. In order to prevent this movement unless desired there is pivoted within the hollow side of the bottom members of the frame a bar 15 which lies in the side member of the frame. The pivot of Specification of Letters Patent.

Patented Dec. 15, 1914.

Serial No. 842,631.

this member, which is preferably termed the latch member is located at the upper end thereof as indicated at 16. This member is provided with a series of 110t0l1GS17 spaced at any desired distance so that when the locking member is in one position a pin 18 which projects from the side rail of the sash is engaged by one of the notches so that the sash is prevented from moving upward. Extending through the front board of the bottom of the frame 10 is a rod 19 which carries on its end a button 20. Between this button 20 and the bottom member of the frame is located a spring 21 which normally holds the button pressed inward and away from said bottom member. The end of this rod is fixed in any desired manner to the member 15 so that by manipulationof the button this member may be swung on its pivot 16. Now if it be desired to raise the sash it is merely necessary to push on the button 20 thus compressing the spring 21. This swings the frame 18 inward and re leases the pins 18 from notches 17 with which they were in engagement. When the window has risen to the desired height the button is released and the pins 18 will engage in the next notches above their position at the time of such release. It is obvious that when these pins 18 are engaged in the bottom notches the device acts as a sash lock to prevent opening of the sash. In case the operator desires to open the sash to its fullest extent the button is pushed in and held in. This causes the sash to rise to the top of the frame and in order to break the shock there is provided at the top of the frame on the under side of the top frame member a pair of elastic plugs 22 which are surrounded by coil springs 23, said plugs and springs acting as a buffer for the frame. This last construction is best seen in Fig. 4. There has thus been provided a simple and eiiicient device of the kind described and of the character specified.

It will be obvious that many minor changes may be made in the form and construction without departing from the material principles thereof. It is not therefore desired to confine the invention to the exact form herein shown and described, but it is wished to include all such as come properly within the scope claimed.

Having thus described the invention, what is claimed as new, is

1. The combination with a wmdow frame having hollow side and bottom members, of

a window sash slidable in said frame, counter-weights for said sash of greater weight than the sash whereby to lift said sash, a ratchet member located in the side member of said window frame,-said member being provided with notches, a pin projecting from the side of said sash and engageable with said notches, and operating means to swing said notched member on its pivots.

2. The combination with a window frame having hollow side and bottom members, of a window sash slidable in said frame, counter-weights for said sash of greater weight than the sash whereby to lift said sash, a

ratchet member in the said member of said window vframe, said member being provided with notches, a'pin projecting from the sides of said sash and engageable with said notches, and operating means to swing said 20 notched member on its pivot, said operating means comprising a rod extending through Copies of this patent: may be obtained for five cents eaeh, by addressing the Commissioner of Patents, Washington, D. G. 

